Overflow device



Feb. 25, 1936 W. C. STOLLBERG OVERFLOW DEVICE Filed Oct. 20, 1933 Di HinOOO OOOO

Patented Feb. 25, 1936 UNITED STATES PATENT OFFICE 2 Claims.

My invention relates to devices for preventing the overflow of fuel oilin the burner well of a gaseous fuel burner and it primarily has for itsobjects to provide a device for that purpose which will be of a simple,eiiective and inexpensive construction, one which will be non-siphoningand one which will not give ofi objectionable odors.

Further, it is an object of my invention to pro vide a device for thepurpose stated in which provision is made whereby the over-flow pipe ofthe device may be closed off when it is desired to prime the burner.

Further, it is an object to provide an over-flow device of the characterstated in which the level of the over-flow tubes outlet may be adjustedhigher or lower in order that the fuel level in the burner well may beraised or lowered.

Further, it is an object to provide an over-flow device in which airvapors, which may be formed due to excessive heat, may be condensed inthe device and run out through an over-flow discharge pipe.

Other objects will in part be obvious and in part be pointed outhereinafter.

To the attainment of the aforesaid objects and ends, the invention stillfurther resides in the novel details of construction, combination andarrangement of parts, all of which will be first fully described in thefollowing detailed description, and then be particularly pointed out inthe appended claims, reference being had to the accompanying drawing inwhich:-

Figure 1 is a vertical section of a burner with my invention applied.

Figure 2 is an enlarged vertical section of a slightly modifiedconstruction of my device.

Figure 3 is a top plan view of the parts shown in Figure 2.

Figure 4 is a cross section on the line 4-4 of Figure 1.

Figure 5 is a vertical section of another modification of the invention.

In the drawing in which like numerals and letters of reference designatelike parts in all of the figures, i represents the oil well of theburner (the burner may be of any well-known construction), 2 the oilchamber housing, 3 the float valve, 4 the lower sediment chamber intowhich the fuel oil is delivered and from which it passes via the floatvalve 3 into the sediment chamber 1 of the housing 2. The housing 2 hasa duct 8 that communicates with the burner-well oil-feed tube 9 that issecured in the oil chamber housing by means of a compression sleeve lland compression sleeve lock screw [0.

i2 is the sediment chamber head through which the needle valve unit 5passes for controlling the flow of fuel oil into the chamber 1. Securedto the head 5?. in any suitable manner is a duct is which has a base I4that carries the. outer casing 15 of my device. The casing 55 enclosesan overflow chamber 3'! and it has an inlet bore It in which isvertically adjustably mounted the overflow pipe ii. The pipe l? is heldin its position by means of a compression sleeve 18 and compressionsleeve lock screw [9. The head l2 which carries the duct l3, etc. isheld in place by the valve head 39 which is threaded at 40 to screw intothe threaded part 4! of the well 2; 4'6 indicates the float-valve stemguide, 41 the valve stem, 42 the float bar, 43 the float connecting rodfrom the bar 42 to the float 44, the latter being located in the floatchamber 45. The operation of the parts 3, 41, 42, 43, 44 and 45 may bethe same as those of the respective parts 8, 9, l, B, 5, ,5

In order to prevent siphoning the casing 15 may be provided with one ormore vents 22.

In the embodiment of the invention shown in Figure 1 the upper end ofthe casing I5 is internally threaded as at 23 to receive a screw plug 24which has a tapered shut-off member 25 that may be used to plug theupper end of the overflow pipe I! when it is desired to prime theburner. The plug 24 is provided with a screw driver slot 25 formanipulation purposes.

21 is a slot for a wrench whereby the compression lock-screw I9 may beturned.

Instead of screwing the plug 24 into the casing [5 the arrangement shownin Figure 2 may be employed. In Figure 2 those parts which cor respondto like parts in Figure I bear the same reference numeral plus the indexletter a. The plug 24a is not threaded into the casing l5a, but isslidably mounted thereon so that it may be forced toward the upper endof the pipe Ila by pressing on the finger knob or button 28 against thetension of a light spring 29. The plug 24a is held from movement out ofthe casing l5a by means of a threaded collar 30 which has holes 3| for aspanner wrench. By this arrangement it is impossible to close the end ofthe the button 28 the spring 29 will force the plug 2 1a awav' from thepipe Ila. 1 Z

In 'fFigure Zjthe casing |5a is shown connected withfa duct 33 thatcommunicates with the ioil feed line and the burner-well oil-feed tribethrough the tuse of ordinary pipe fittings and couplings not shown.The'duct 33 is connected with the casing Ilia by means of a threadedcollar 32 which corresponds to the base I; while the duct 33 correspondsto the duct l3 in'Figur'e 1.

In Figure 5 is shown another modification of the invention? In thisfigure the over-flow pipe 11b is threaded at 35 into t le. base [4b andthe casing I5!) is removably threaded into the base, the casing lSbhaving openings 38 in its threaded end to register with the oven-flowpipe 2lb that is carried by an over-flow neck 35 of the base [4b. Inthis embodiment also the casing IE1) is provided with the tapered plug25b so that by unscrewing thecasing Gib and inverting it as shown indotted lines in Figure 5 it may be used as a temporary closure fer thepipe llb when it is desired to prime theburner.

In the embodiment shown in Figure 5 those parts which correspond inpurpose and function to like parts in the preceding figures bear thesame reference numeral plus the index letter 19.

The oil level is indicated in Figure 1 by line 36.

From the foregoing description, taken in connection with theaccompanying drawing, is thought that the complete construction,arrangemerit and advantages of my invention wili be clear to the art towhich it appertains.

What I claim is: a V

lfIn combination with a liquid frgel burner, a constant maximum levelfuel fee-ding means 4O therefor including a housing having an inletcompaiftment communicating with the source ofi fuel, a sedimentcompartment communicating j with theburnery a threaded passageconnectingsaid compartments, a detachable cover plate forming a wall ofsaid sediment compartment and having an upwardly extending conduit proecting therefrom in communication with the sediment chamher and anopening in axial alignmjent with said threaded passage, a valve unitextending through said opening and into engagement with 'said threadedpassage to contrgrl the flow of fuel between said compartments and toclamp said cover plate in place, and an overflow device connected tosaid conduit and operatlvely positioned relative to said burner toprevent flooding thereof wall of said sediment compartment and havinglanupwardly extending conduit projecting therefrom in. communication withthe sediment chamber'and an opening in axial alignment with saidthreaded passage, a valve unit extending through saidppening and intoengagement with said threaded passage to control the flow of fuelbetween said compartments and to clamp said coverpiate'in place, anoverflcw' device connected to said conduit and operativelypositicnedrelative to, said burner to prevent flooding thereoi upon thefuel level exceeding said maximum level, and manu aiiy actuated meansfor endering said'overfiow device inoperative purposes.

to permit flooding for priming WALTER eARL' STVOLLBERGL

